EP 1975895 A1 20081001 - Methods and systems for proximity-based monitoring of wireless devices
Title (en)
Methods and systems for proximity-based monitoring of wireless devices
Title (de)
Verfahren und Systeme zur nähebasierten Bewachung drahtloser Geräte
Title (fr)
Procédés et systèmes de surveillance selon la proximité de dispositifs sans fil
Publication
Application
Priority
US 69232307 A 20070328
Abstract (en)
Method and apparatus are disclosed for monitoring the geographic location or velocity of a first wireless device relative to at least one other wireless device and noting an exception if the first wireless device moves beyond a predetermined threshold of separation from the second wireless device, or if the velocity of the first wireless device is outside a predetermined threshold. In response to an exception, supervisory action is taken which may include contacting the wireless device or contacting another person.
IPC 8 full level
G01S 19/11 (2010.01); G08B 13/14 (2006.01)
CPC (source: EP US)
G08B 21/0269 (2013.01 - EP US)
Citation (applicant)
US 7110749 B2 20060919 - ZELLNER SAMUEL N [US], et al
Citation (search report)
- [XY] US 6961001 B1 20051101 - CHANG E-LEE [US], et al
- [Y] US 2004263327 A1 20041230 - HAYES DAVID J [US], et al
- [X] GB 2400711 A 20041020 - DIMMER PAUL THOMAS [GB], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA MK RS
DOCDB simple family (publication)
EP 1975895 A1 20081001; CA 2624872 A1 20080928; JP 2008245286 A 20081009; US 2008242311 A1 20081002; US 8150418 B2 20120403
DOCDB simple family (application)
EP 08153286 A 20080326; CA 2624872 A 20080307; JP 2008079799 A 20080326; US 69232307 A 20070328